Warren Soultrader + Enduring Renewal + Carmen, Cruel Skymarcher

Warren Soultrader

Enduring Renewal

Carmen, Cruel Skymarcher

How it works

1. Activate Warren Soultrader by paying 1 life and sacrificing the nontoken creature that can be cast using one colored mana.
2. When the creature dies, Carmen and Enduring Renewal trigger.
3. Resolve the Carmen trigger, causing you to gain 1 life and put a +1/+1 counter on Carmen.
4. Resolve the Enduring Renewal trigger, returning the creature from your graveyard to your hand.
5. Resolve the Warren Soultrader ability, creating a Treasure token.
6. Activate the Treasure by tapping and sacrificing it, adding one mana of any color.
7. Cast the creature by paying its mana cost.
8. Repeat.